Gardner Spring E34C Extension Spring 3.81 Lb 0.375 in Od

Product Description

The GARDNER SPRING E34C is a zinc-plated steel extension spring designed for light-duty tensioning applications across HVAC, mechanical, and general trade installations. With an outside diameter of 0.375 inches and a wire diameter of 0.0348 inches, this spring delivers a rated spring rate of 0.96 pounds per inch and supports a maximum work load of 3.81 pounds. The overall free length is 2.75 inches, extending to a maximum of 6.06 inches under load. Cross-over end style provides secure loop engagement in standard spring-hook and pin configurations. Sold in a package of 3 pieces, making it practical for service stock.

This extension spring is suited for residential and light commercial applications where consistent return tension is required. Typical use cases include damper linkages, access panel latches, equipment door returns, and general mechanical assemblies in HVAC equipment, plumbing fixtures, and electrical enclosures. The zinc-plated finish offers basic corrosion resistance for indoor and semi-protected environments. Licensed technicians and maintenance professionals working on mechanical assemblies will find this spring a straightforward service replacement or new-installation component.

Key Features

• Cross-over end style for secure engagement on standard hooks and pins
• 0.375 inch outside diameter with 0.0348 inch wire diameter for consistent load performance
• Spring rate of 0.96 lb/in with a maximum work load of 3.81 pounds
• Maximum extended length of 6.06 inches from a 2.75 inch free length
• Zinc-plated steel construction for corrosion resistance in indoor environments
• Sold as a pack of 3 pieces for efficient service stock management

Compatibility

Designed as an OEM-style replacement or new-installation extension spring for light-duty mechanical assemblies in HVAC, plumbing, and general trade equipment requiring a 0.375 inch OD cross-over end spring.

Installation Notes

Installation should be performed by a qualified technician familiar with spring-loaded mechanical assemblies. Relieve all tension and de-energize any associated equipment before removing or installing the spring. Use appropriate pliers or spring hooks to seat cross-over ends without overstretching beyond the maximum extended length of 6.06 inches, as exceeding this dimension can permanently deform the spring. Follow applicable equipment manufacturer service procedures and local mechanical codes during installation.